Process of obtaining commercial gasoline from natural-gas gasoline



Jim. 12', 1926.

H. J. MACKENZIE ET AL PROCESS CF OBTAINING COMMERCIAL GASOLINE FROMNATURAL CAS CASCLINE Filed Sept, 26, 1923 Patented Jap. 12. 1926.

UNITED STATES PATENT OFFICE..

HERMAN JAN MACHEN ZIE AND ALEXANDER WILHELMUS STEENBERGH, F TJEPGE,-JAVA, DUTCH EAST INDIES, ASSIGNORS TO DE BATAAFSCHE PETROLEUM. MAT-SCHAPPIJ, OF THE HAGUE, NETHERLANDS.

l PROCESS 0F OBTAINING COMMERCIAL GASOLINE FROM NATURAL-GAS GSGLINE.

Application filed September 26, 1923. Serial No. 665,018.

. gas gasoline.

Natural gas gasoline.l is a gasoline which' 'applying this so-calledweathering-process part of theliquid hydrocarbons will also evaporate,and -this is undesirable, as these hydrocarbons vare liquid under normalconditions and should remain in the commercial gasoline. Further, theseparation of these evaporablc hydrocarbons from the permanent gases,`is diflicult and imperfect.

After this weathering the gasoline so treated is mixed with heaviervarieties of gasoline according to circumstances, in order to obtain arequired market product.

The above1nentioned method has been improved, by adding the natural gasgasoline under pressure' to the heavy gasoline (the I so-called blendinggasoline) and by applying the weathering-process only thereafter. As amatter of fact, a decrease in the evapora-tionslosses is obtained, whichmust be ascribed to the fact that this heavy' gasoline keeps a greaterquantity of the light hydrocarboi'is in solution. However, this methodalso has the above mentioned drawback, that, together', with theperinanentgases, normallyV liquid hydrocarbons also escape, which same,of course, it is desirable to retain in the gasoline.

Oui" invention practically removes this drawback, and embodies thecharacteristic that the so-called weathering-process is executedinapplying a lower temperature. consequence thereof is that less of thevaluable hydrocarbons escape With the perinanent gases. The best resultsare obtained, if according to oun invention, the temperature, or thetemperature and pressure, is gradually altered until the desiredconditions of pressure and temperature are obtained. In this Way a quietand gradual gas development is obtained in releasing the pressure, sothat the loss in valuable normally liquid hydrocarbons is reduced to aminimum. Y Y Y For illustrating thea-esprits obtained by the applicationof this invention, the following experimentsare described. e.

1. In a container, 196.3 c..1n." ofblending gasoline were mixed under acompres sion-pressure of 17 atms. abs. with .17?.7 c. 111.3 of naturalgas gasoline (obtained in the usual manner Without taking any specialmeasures), and at a temperature ofabout 30' C. After releasing thepressure, 309.6 c. 1n.3 of normal gasoline remained. Assuming that noneof the blending gasoline is lost then 309.6 c. 111.?l 195.3 c. n1.a113.3 o. 111.3, or about 63.7 percent by vol;

ltr

ume'of the original quantity of the natural gas gasoline remains. f

2. The same container. was iilled With 2G() c. n1.3 of blending gasolineand vmixed under the same compression-pressure withv172 c. 1n.3 ofnatural gas gasoline (obtained in the usual manner Without taking anyspecial measure). This mixture was cooled down' to 20 C., then thepressure was relead and the temperature was raised rto that There r thesurrounding atmosphere.v u sults, 322 e. 111.3 of mixture 'of about thesame characteristics as obtained according to experiment 1. In this case322e. m.- 200 c. m.3 122 e. 1n.3 or about 70.9 percent by Volume of theoriginal quantity of the natural gas gasolinereinains. This result,expressed in figures, shows that the application of this lnvention givesan ad 1 vantage of 7.2 percent by volume over the known process. i

For carrying out this process,'apparatus is preferably used such as isindicated in the accompanying schematic drawings, wherein the singlegure sh'ows a view of the entire plant.v

The natural' gas gasoline is supplied by i. freninreesionpl@nl (nelshown in llie K @gentili-nge), is freed, from miler is nir :ispoeeililin end linen lril liiroiigli pipe .i

n ai a.. il cooler iiri'forrling Liebig' :sused which is eenlerl waiter.iiieiigli e 3 lille blending: gasoline is siipplierl juin l fromeenriiiners lll :mil lil y'iilve i?. unil iiiro :i gzis-eepzirzilor `IliWilli Jelie :iid oli llie vulve ll. :i ,ressiiie ni if pnssiiile, nomore llnin one iitiiiospliere is in niiiiziiiiiefl.

iin. 'releasing elle preseiii'e iii; n low lenipernH lure, those pzirlsare i'einoi'erl, n'liirli oiigi'lilu nel; lo be presen incornii'ierciiil gasoline iin- (ler noriiiiil conditions.

The cooling flown mf' flie niixlviire, arising from lLlie removal ofrimes byxei'fiiioiiitioii. increases lglie ellective oiilpiil' oi lliefoolingisysieiii. .fr leaving tbe separator lil llie nliiie niixliireriiiii` tliroiigli ilie oiiir Czis ings or 'jeeliels of lie variouscoolers l0, :is n refiiill of Wliieli the eiiipeiuliire o'l' lilleini/.v iire gradually ineierise nml llirnngli rile iiie; Ylfrein l'lie`l'iiissegljo tliioiigli libe coe-lors., ire-A gel inning) l5?liiij'oiifl nliiifli :i regulating lirongli lli-e reis eloriigelzii'iiiis 'li llie pressure of llie ne :will ii'liirli een be renin z irziiirsef; zi i'e-rooliiigf` :iiiol nl :ii-e l'nie 'prr- Y .si iii'oiiiforming in llie eoiileiner Si, wliiifli inigli. nel, ol'lierwise 'lnf; Q.Sern liefs in View utilize, es 'fr iiinle. ille coo ingelec diie to eevenizii: ,on :1V fictions iieli. :ire not lleniriyfl in. ii

inse vree el lili 'teil liquid., eid

quanti i* .lively lange eurer eine 'leer meier, ille mixture runsllireugli e. niziin surfaces il lie poolingv system, :ri second cool ingnot nere iiy, 'llie beller 'ilie iiisiilii lion ol the system. und theexi-buiige oll lie-.itA iii Elie System, the siiiiiller erin be lilleimpurity of Jlie cooling-plant.

We claim:

l. process' for nbliiiiiiiig coiiiiiiereiiil gasoline lroni`inseline-conimining ges. um pifieiiig', eoiiiiii'esniin;` siicli gus.cooling' Jilie (.:oinpressefl iras lo iioriiiiil einiiei'iitiii'e wliileziiziiiil-:iiniiigr lli@ vein-pression iii-ensure :ind separating ontllie i'esiilliiigr iiiitiiriil ,Qns gasoline miller pressure. tlieniii'iriiiig'y the naturel gais gasoline wizli blending gais line,cooling` the mixture lo ii. relatively low temperature while maintainingit romireisseib tlien ielezisiiig llie proriiii'e on il-liioniixtiireilo zitiiiosplieie pressure, dien separating ont the resulting gaisfreni lvlie liquid, be niixliire being .gradually broiiglil` loulinosplierie eiiipei'iitiire :il'ter ille pi'essiireiliaisi riivlieiliiiiiosiilieric, lie separating ont of flic grins lq'ioiii lliolliqiiiil being iirogresasive :iiiil occurringA over tlie eiiii'i period(liiriiigiv wliieli 'lie iiiixliii'e ie; i-oiiiiiij;Y lo:ilinosi'ilieiii' liiiiiiiei'iiliii'i.

L). process lor obliiiiiiiigi' eoiiiiiiei'ciiil gziioliiie l'rniiignisolineniilziining' gue. ("iiiiprining, compressing siifsli gijiis,eenling llir eoii'ipi'esseil lo noiii'izil teiiiiiorziliire wliiliniaiii'iiiining tlie comprension pressure iiiiil Sepa. uiting; ont llieresulting' iiiitiiiiil gils gnoline inici r pressure, then mixing thenaturel.

nis gaie-oline willi blending' g'iisigiliiie. cooling; llii iiiixliii'elo :i relatively l"low liiiipei'zibiii'e while iiiiiiiiiiiniiigij itroiiiprissegl. llien r oilsiiig the pressure on tlie niixliiie to tinosplierie pressure, llien separating l nl, tlie resulting; gres l'i'oiiirlie lifiiiiil, will iiiixtiire beiiigr `z'i'znliizilly lil-might'. tnsilniosplierie leiiiiieriitiii'c ijliei' ille iii'eniii'ilian refielieiiiiliiiiisiilieiie, siiiil Seiiziiziliiigr ontv olf tbe gais ll'roiiillie liriiiiil being; prowressire :ind oceiii'- ,v ring over tlie enlireperiod iliiring which Jalie niixtiiie Coming' to :ilii'iosplierietemperan tine. Siiiil reliitivelji' low teinperiitiire being' iiboii53100 C.

f3 process for obtaining eoiiiinercizrl gasoline freinnisoliiie-coiiiiiiiingr ons. coinprisiiig, coii'ipressing snc-li gras lozibniil l? alini'isplierefs, separating out llie resiilliiig:iiiitiirzil glie gasoline. :il iioriiiel teiiiiiei'iiliire sindcompreS-Qion presiiie, mixing the nutnizil @as gaSoline willi blending`gasoline. 'ii'ogfr-:ssiiely cooling the niixtiii'o to about -QO C..tlien nucldeiily releasing llie presa sur@ on llie mixture lo aboutiilinosplieric pressure, and gradually bringing the tem peinture nl" themixture brick to no1-mel while 'irogressiiely separating out the gaseouselenient from the liqui perlion.

ln lestiinony Wl'iereeif We ellii; nir signo .L :,illlQS,

